Carbureting apparatus.



F. W. 0. BOECKENI.

CARBURETIIIIG APPARATUS.

APPucAnon min mm. 5, 1914.

Patented Febf, 191?.

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TL'Z Waoe Mem F. WJ). BOECKEIVI.

cARuRumG APPARATUS.

APPLICATION FILED MAR. 5. 1914. Lflg,5 Patented Feb. 6, 1917.

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CARBURETING APPARATUS.

APPLICATION msn MAR. s. 1914.

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mr m-wls persas cc womummwnsmncmm u c FRITZ l/VILI-IELM OTTO BOECKEM, OF LONDON, ENGLAND,

ASSIGNOR TO'-RTHUR MORRIS, OF REIGATE, ENGLAND.

CARBURETINGv` APPARATUS.

Specification of Letters Patent.

Application filed March 5, 1914. Serial No. 822,732.

To all whom t may concern:

Be it known that I, Fnrrz W'ILHELM OTTO Boeckner, a subject of the King of Great Britain, residing at 30, 3l, and 32 Bolsover street, Great Portland street, London, l.,

England, have invented certain new and" useful Improvements in or Relating to Carbursting Apparatus, of is a specification.

rfhe present invention relates to apparatas .for use in the production of carbureted air, of the automatic type wherein a volatile hydrocarbon, such as petrol, is supplied with air automatically, according to gas consumption, to .a carbureting or mixing chamber, in which a pump or other charging device working in water takes up the mixture and forces it into`a bell or reservoir from whence it is drawn olf, as required, for use.

In such apparatus although the supply of air and gas to the carbureter is regulated and controlled according to the gas consumption, it is found that the pressure and richness of mixture within the carbureter varies, according to whether the gas is being drawn off quickly or otherwise, or from any other causes, as owing to the variation in pressure the water level in the pump device also varies. Consequently the free space above the water, in which the mixture of air and gas takes place, also varies, thus causing the richness of the mixture to vary with the variation in water level.

Now as it is most desirable that the mixture should, throughout be as constant as possible, it is desirable that this variation in water level should be prevented, or in other words, that the water should be maintained at as near a uniform level as possible. This I effect byproviding an overflow chamber or compartment into which some of the water in the pump chamber will be driven when the gas pressure exceeds the normal and from which it is automatically returned to the drum chamber, so as to maintain as nearly as possible a constant water level irrespective of pressure in the chamber.

Various means may be employed to effect this equalization of water level, one of which will be described in detail, in connection with a gas generator of the type described, reference being had to the accompanying drawings.

which the following Figure l is an elevation, partly in section of a carbureter comprising a petrol tank, carbureter with rotary drum pump and gas holder, the petrol supply device and drum pump being driven from a common shaft rotated by weights acting on a cord wound on said shaft.

Fig. 2 is a detail sectional view on line Q--2 Fig. 3 showing the water overflow compartment and the means for returning the water to the main chamber.

Fig. 3 is a section on the line 1 1 of Fig. 2 looking in the direction of the arrow, with part of the partition wall broken away to show the water scoop behind.

Fig. l shows a modified arrangement.

l will now describe the general arrangement and operation of the' apparatus shown in Fig. l.

Upon a frame or stand c is mounted a closed casing l) within which is arranged a rotary drum pump c, the shaft Z of which is carried in a thrust bearing e inside the casing, its outer end extending through a stufling box e and terminating in a bevel gear e2.

Upon the stand a is mounted a tank f for petrol or other volatile hydrocarbon in which rotates, fixed to a shaft f5 a disk f or spider, upon which are mounted a number of cups or buckets f2, arranged so as to pick up charges of petrol, as they dip into the liquid in the tank f, and discharge their contents after they arrive at their highestposition, on to a tray or gutter f3, from whence the liquid passes into a pipe f4 the other end of which enters the top of the casing I). The petrol tank f is closed in an airtight manner by a cover f8, a petrol charging opening being provided, closed by a cap or stopper fg.

Outside the tank f the shaft f5 is provided with a pulley f6, over which passes a cord or chain f7 passing around a second pulley y mounted on a driving shaft g carried in bearings g3 on the stand a..

On the shaft is also mounted a bevel wheel g2 meshing with the bevel wheel e2 on the pump shaft (Z.

The shaft g may be driven by a weight motor or in other convenient manner.

0n the stand a a gas holder, comprising a vessel it with bell h is mounted, an inlet pipe j for gas forming a communication becasing at Z2. The pipe Z also passes freely Y through the top of the bell, which is provided with al sleeve or lining adapted to close the opening or openings Z in the pipe Z when the bell reaches its highest position.

The pipe-j at its lower end is connected as by a 'T piece, with a branch pipe j whichY extends upward so that its openV top lies near the top of the drum pump extension c. This extension is in the device illustrated of a conical form having a central opening o2 torniling a. couniulnication between the interior of the drum and the exterior space which exists between the outside of the pump and the interior oi. the casing.

The casing is provided with a. partition b (Figs. 2 and 3), which7 except for certain openings, hereinafter referred to,v completely shuts oli1 the space b2 from the space b3. In this space orY chamber b3 I arrange Va disk D4 carrying buckets b5, similar to the buckets in the petrol tank f, the disk being l fast on the shaft (Z, so that it rotates therewith and with the pump c.

Thev partition Z2 is cut through just below the horizontal center line so as to form horilzontal openings t6 on either side of the vertical center of the partition. The material of the partition immediately below the horizontal cuts is bent outward at ZJ? toward the bucket disk, and the material of the partition immediately above the cuts is pressed inward at S two V-shaped side Vopenings ZX (Fig. 2) are thereby formed which are closed by side plates b9 (Fig. 3). I thus form pockets projecting from the face of the partition Z2', which pockets form communieating spaces between the chambers Z2 and b3 at a height which represents the normal water level of the apparatus. An overflow funnel m with pipe m passing out through the bottom of the casing, and there provided with a tap m2 (Fig. l) is provided to test when the correct amount of water has been charged into the casing, an opening 611 being formed for the purpose in the partition communicating with the mouth of the funnel m. A lubricating pipe a is also provided to supply lubricant to the bearing of the shaft CZ.

The pump shown in the drawings' consists of a hollow drum 0 closed at' both' ends, mounted upon the .shaft (Z. Around this 1 vdrum'are formed a number of helical conv duits 0*, their outer openings or mouths o2 lying radially around the iront ot the pump and their inner ends or tails 03 opening similarly into the space c3 Ywithin the ex-Y tension c.

It will now be understood that if the casing is charged with water up to the level shown in the drawing and the drumV pump is rotated Vin the direction of the arrow (Fig. l), the mouths 02, as they rotate will scoop up gas and when they plunge into the water will compress said gas and force it along the helical conduits until itV issues at the other end of the drinn, into the chamber c3. Y Y

The operation of the machine will now be described. 1

A suitable amount of petrol or other volatile fuel is charged into the tank f, suficiently say to halt' lill it. Water is also in-V troduced into the casing Z) until it reaches the level of the horizontal openings Z/J' which can be tested Vby turning on the `tap. m2

(Fig. l). Y v

The drum pump is thus haii in'unersed in water, which in addition to partly sur-- roui'iding the pump also enters and partly [ills the space within the extension c3. There arevconsequently two spaces separated froml each other by ,water e., the space in the upper part ot the casing around the pump drum, and the upper space inside the casing c into which thefpipe j" extends.

The VVweight motorbeing brought into action acts upon' the cord wound Von the shaft g and slowly rotates it. This rotation is transmitted bythe chain f7 and bevel gear g2 e2 respectively to the petrol feed shaft and the drum pump C. Petrol is thus., as the'shaft f5 rotates, picked up by the buckets 7"'2 and discharged Von to the channel f3 from.

Vwhich it flows down the pipe f* into the casing ZJ and drops on the outside of the pump, where it vaporizes andrmixes with the air therein, this air entering the casing t through the pipe Z. The pump being simultaneously rotated takes up this carbureted air by means of its mouths V02, lwhich successively plunges into the water thus causing the carbureted air taken upto -be Aforced under pressure along the helical conduits until it issues from the outlets 03 and rises to the top of the space c. in the pump eX- From thence the Vgas passes tension o. down the pipe 7" upthe pipe y' into the bell ZL', `from Vwhence it is drawn oli through the pipe Zt"V in accordance with the required consumption of gas, the bell rising or Vfalling according to whether. the supply or consumption of gas is the'greater.V `When the bell is full, that isto say, in its highest position, the'air-inlet Zf is ,closed by the sleeve on the bell, and consequently no morerair can enter the casing Z). The drum pump,

continuing to revolve, will still draw olfcar-V Y lnireted airV from the Vspace b2! whereby a partial vacuum will beV formed, and the pump will therefore meet with gradually increasing resistance until the effect of the vacuum overcomes the effect of the Weights and the machine will thus stop running automatically until further gas is drawn on and the air inlet 7 uncovered, whereupon the vacuum will be destroyed and the pump will again commence to revolve. The petrol feed being driven synchronously with the pump, the amount of petrol feed will be in direct relation to the speed of rotation of the pump, and when the latter stops the petrol feed will also cease.

The apparatus is thus automatic in its action and when once started requires no at tcution, except periodical Winding up of the weights of the motor, lubricating and recharging the petrol tank. The mixture of air and petrol is of substantially a constant value, When the gas consumption is steady, but when theconsumption fluctuates by gas being drawn off irregularly, the constancy of the mixture would vary, since lthe level of the Water in the casing 7), and consequently the volume of the space 722 in which the air is carbureted will vary in accordance with the pressure of the gas in the space o3, due to the Weight of the bell and to the action of the pump as it forces carbureted air into the space c3, so that when the pressure exceeds the normal Water from the space c3 is forced out, by the gas pressure, into the outer space b2. It will be evident that unless the Water level be maintained substantially constant, the richness of the gas mixture will vary, since given amounts of petrol Will, at different times, be vaporized in dierent volumes of air.

To maintain al substantially constant ivater level, for the purpose of preventing variations in the gas pressure in the carbureter, due to any cause, I provide a Water overfioiv space or chamber h3, in Which rotary scoops 725 pick up and return to the main casing 79 any Water which is forced out of the latter by increase gas pressure, through slots or passages 7) into the overflow space 793, the Water picked up bythe scoops being carried up and discharged after the scoops reach their highest position, and caught by the outwardly projecting strip 717 on the Water discharge side of the partition Thus almost simultaneously with the overflow of the Water from 722 it is returned thereto by the scoops b5, and a substantially constant level of Water in the casing 7)V is maintained.

The principle of the invention is capable of being carried out in a variety of Ways. For instance, in the modification shoivn in Fig. 4, the casing b which may be arranged at an incline, as in Fig. l, or horizontally is provided with a horizontal slot or slots 796 formed by cutting and pressing out the part 72", so that the edge of this part is at the required normal Water level. Attached to the side of the casing 7) is a narrow overfiow tank B, provided With a spider or disk 7)* carrying buckets 715. The shaft 7210 to Which the disk bt is secured is carried in a bearing B and is provided ivith a driving pulley This shaft blo is parallel `with the driving shaft g by which the pump or the like driven, so that, by extending the shaft f/ to the left and posite the pulley B2, the shaft 7) can be easily driven at the required speed suitable diameters of the pulleys being chosen for that purpose. The action is the saine as in the previous construction, water, which is forced out of the casing 7) being picked up and returned thereto by the scoops lllhat I claim and desire to secure by lietters Patent is l. A carburcting apparatus comprising a Water receptacle, a rotatory pump in said receptacle, means for supplying liquid hydrocarbon and air to be carbureted to said pump, a second receptacle adjacent to and communicating with the water receptacle by an opening at the normal Water level to per mit Water to overflow into the second receptacle from the Water receptacle when the ivater level therein exceeds the normal, means for returning the overflow Water to the Water receptacle, and an extension casing on the pump to receive the carbureted air from the latter' and a draw-off pipe opening into the top of the extension casing, substantially as set forth.

2. A carburcting apparatus comprising a Water receptacle, a rotatable pump drum in said receptacle, means for supplying the liquid hydrocarbon and air to be carbureted to said pump, a partitioned-off extension of said receptacle giving a Water-overflow chamber, a Water-level opening in the partition betvveen the overflow chamber and the pump chamber to permit Water to overflow into the second receptacle from the Water receptacle ivhen the Water level therein exceeds the normal, means for returning overfiow Water to the pump chamber on the rotation of the pump, and an extension casing on the pump to receive the carbureted air from the latter and a draw-off pipe communicating with said extension chamber, substantially as set forth.

3. In a carburetor a pump chamber, a partition dividing the chamber into two separate chambers, a shaft extending through both chambers, a rotatory pump body mounted on said shaft in one of the chambers, an extension casing of the pump on one side, a draw-off' pipe opening into the top of the extension casing, and a Water-level opening in the partition between the pump chamber and the other chamber, and Water scoops in the latter mounted on the shaft, substantially as set forth.

providing it with a pulley, op-

,4. A carbureting apparatus Comprising a waiter receptacle, a iotatory scoop pump comprising a series of helical conduits in said receptacle, means for supplying liquid yhycliooai-bon and air to be earbui'etefl to said pump, a second receptacle communicating with the Water receptacle by an opening at the normal watei level to permit Water fto ovei'flou' into the second receptacle from the uatei' receptacle when the water level there in exceeds the normal, means for returning 'the overflow Water to the Water receptacle, and an extension easing on the pump to ie ceive the oai'buietetl air from the latteiand a haw-off pipe opening into the top of the extension casing, substantially as set forth,

5. A carbureting apparatus comprising a lWater receptacle, a iotatoiy pump in said receptacle, means for supplying liquid hydrocarbon and an' to be oai'buieted to said pump, a second receptacle oommunieat ing with the Water receptacle by an OpernV from the water ieoeptacle WhenV the WaterV level thei'ein exceeds the no1-mal,V means for returning the overflow Water to the Vater receptacle, and an extension casing'on the pump to keep the earbuicetecl ail' issuing from the pump from mixing #with the an' in the water receptacle and a draw-off pipe for the earbui'etecl air opening into the top of the extension casing, substantially asset forth.

In testimony whereof l lhave alixed my Signature in presence ol' two witnesses.

FRITZ WILHELM OTT() BOECKEM. litnesses lV. E. ROGERS, G. J TORTE vCopies of this patent ymay be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. v 

